Music-leaf turner.



E. H. KRAUS.

MUSIC LEAF TURNER.

APPLICATION FILED JULY-15V, 1914.

1,1.32,358 Patented Mar. 16, 1915.

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THE NORRIS PETERS 60.. PHOTG-L!TO WASHJH'QTON. D. C4

E. H. KRAUS.

MUSIC LEAP TURNER.

APPLIOATION FILED JULY 15, 1914.

' 1,132,358. Patented Mar.16,1915.

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UNITED STATES PATENT orrrca.

EDWARD KRAUs, or RAHWAY, NEW JERSEY.

MUSIC-LEAF TURNER.

Application filed July 15, 1914.

. way, in the county of Union and State of New Jersey, have invented new and useful Improvements in Music-Leaf Turners, of which the following is a specification.

The invention relates to music leaf turners, more especially adapted for use in pianos.

The primary object of the invention is the provision of a music leaf turner wherein any number of leaves or sheets of music will be sucessively turned, each leaf being initially lifted under the action of a vacuum so that it will be positively turned, the music leaf turner being of novel form and is readily and easily mounted in the piano for use.

Another object of the invention is the provision of a music leaf turner wherein the pump for creating the vacuum is under the control of the operator and is primarily operated to lift the sheet of music to be turned, the mechanism for turning the sheet being also controlled by the foot of the operator.

A further object of the invention is the provision of a. music leaf turner of this character which is simple in construction, reliable, positive and efiicient in its operation, foot controlled, and also inexpensive in manufacture.

WVith these and other objects in view, the invention consists in the construction, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereunto appended.

In the drawings :Figure 1 is a fragmentary front elevation of a piano showing the music leaf turner constructed in accordance with the invention applied thereto. Fig. 2 is a sectional view on the line 22 of Fig. 1. Fig. 3 is a View looking toward the inner side ofthe front portion of the piano, showing the music leaf turner in position. Fig. 4 is a sectional View on the line H of Fig. 1. Fig. 5 is a sectional view on the line 55 of Fig. 1. Fig. 6 is a vertical sectional view through the pump.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawings in detail, A designates a portion of a piano having formed in its front above the key bed at the point where the usual rack is located an Specification of Letters Patent.

Patented Mar. 16, 1915.

Serial No. 851.127.

opening 10, while suitably fixed to the inner face of the lower front portion of the said piano are spaced brackets 11, 12 and 13, respectively, the latter one supporting a rotatable gear 1%, while ournaled in the remaining brackets is a vertically disposed rotatable shaft 15, the lower end of which has fixed thereto a gear 16 meshing with the gear 11, while concentrically connected to the gear 11 is an operating rod or lever 17 the same being pivotally connected to a foot treadle 18 supported in a bearing 19 suitably mounted in the casing of the piano or at the front thereof, the said front being cut away to accommodate the treadle 18 and permit the projecting of the same without to be engaged by the foot of the operator or the player of the piano.

At one side of the shaft 15 and spaced therefrom is a base plate 20 supporting a piston cylinder 21 in which reciprocates a piston 22, the stem 23 thereof being pivoted to a rocking lever 2-1 which is also pivoted at 25 in a bearing 26 mounted within the casing of the piano. This lever 2 1 is further pivoted at 27 to the operating rod or lever 17 so that on actuating the foot treadle 18 the pump will be operated.

In one side of the cylinder 21 is formed a bleed opening 28 which permits the escape of suction from the said cylinder when the pis-r ton 22 has been lowered within the cylinder to a predetermined point, the air being re leased from the cylinder 21 for a purpose presently described.

Leading from the cylinder 21 at its upper end is a flexible tube 29 which is also connected to a suction nozzle 30 pivoted at 31 to the upper end of the shaft 15, the nozzle being formed with an extensible section 32 having at its free end a rubber mouth piece or cup 33 with which is adapted to contact the sheet of music to be turned, and on the operating of the pump suction will be created in the nozzle 30 so that the mouth piece 33 will grab the sheet for the successive turning of the music in a manner presently described.

At the point of the opening 10 in the front of the piano A is a suitable rest 34: for the music, the suction nozzle 30 being projected through the opening above the uppermost edge of the music held upon the support, and this nozzle is normally disposed at a forward inclination so as to be in position to initially lift the sheet for the subsequent turning thereof, as will be hereinafter fully described.

Coiled about the shaft 15 is a tension spring 35 which has one end fixed to the said shaft and its opposite end fixed to the bracket 12. On the rotation of the shaft 15 in one direction the spring 35 is tensioned so that when pressure is relieved from the foot treadle 18 the shaft will be automatically turned in the reverse direction, thus resetting the suctionnozzle 30 for the turning of another sheet of music, so that each and all of the sheets ofmusic upon the support 3% can be successively turned in their order.

Mounted in the nozzle 30 is a set screw 36 which looks the section 32 in adjusted position when extended or retracted, the nozzle being adjustable so that it will operate successively for turning sheet music of different sizes.

Suitably supported in the casing of the piano and extended in the path of movement of the nozzle 30 on the rotation of the shaft 15 is a cam bracket 37 which automatically lifts the nozzle 30 after the same has traversed a predetermined distance so that it will not interfere with the turning of the leaves of the sheet music as the nozzle 30 is lifted above the upper edge of the music after the sheet thereof has been turned so that it may swing to normal position for the next sheet of music to be turned.

In the operation of the music leaf turner, assuming that music has been placed upon the support 34 at the front of the piano, the operator'depresses the foot treadle 18, which lowers the piston 22 within the cylinder 21, the said piston being normally raised in the cylinder so that during the lowering movement thereof a suction is created through the mouth piece or cup 33, which draws the sheet of music to be turned against the same. Now, on the continued depressing of the foot treadle 18 the gears 14: and 16 will rotate the shaft 15, causing the nozzle 30 to swing over the cam 37, and when the said nozzle reaches the raised portion of the cam after the turning of the sheet the nozzle is lifted above the music so that when the foot is released from the treadle 18 the spring 35 will automatically turn the shaft 15 in the reverse direction, bringing the nozzle 30 to normal position, so that on the repeated op eration of the music leaf turner the next sheet will be turned in a manner as hereinbefore described. 7

hen the nozzle 30 during the swinging movement thereof reaches the raised portion of the cam 37, the piston 22 has become lowered in the cylinder 21 below the bleed opening 28 so that the suction created in the nozzle is exhausted through the opening 28.

Thus, the mouth piece or cup 33 will be released from the sheet just prior to the raising of the nozzle above the music on the support 34 at the front of the piano. Thus, the sheet turned will be released so that the operation of the music leaf turner can be repeated. it will be noted that the shaft 15 turns subsequent to the creation of suction within the nozzle 30 on actuating the foot treadle 18 of the music leaf turner.

From the foregoing it is thought that the construction and manner of operation of the device will be clearly understood, and therefore a more extended explanation has been omitted. v

What is claimed is 1. A music leaf turner comprising a plurality of supporting brackets adapted to be fixed to the inner side of the front of a piano, a rotatable shaft journaled in a pair of said brackets, a foot pedal, a bearing fixed within the piano and pivotally supporting the pedal, a gear mounted for rotation on another of the brackets, a gear fixed to the shaft and meshing with the firsthamed gear, a connection between the pedal and the said first-named gear for rotating the latter, an extensible suction nozzle pivoted to the shaft, suction means connected with the said nozzle and also connected with the pedal, a mouth piece on said nozzle, and a cam for lifting the nozzle after the turning of each sheet of music.

2. A music leaf turner comprising a plurality of supporting brackets adapted to be fixed to the inner side of the front of a piano, a rotatable shaft journaled in a pair of said brackets, a foot pedal, a bearing fixed within the piano and pivotally supporting the pedal, a gear mounted for rotation on another of the brackets, a gear fixed to the shaft and meshing with the first-named gear, a connection between the pedal and the said first-named gear for rotating the latter, an extensible suction nozzle pivoted to the shaft, suction means connected with the said nozzle and also connected with the pedal, a mouth piece on said nozzle, a cam for lifting the nozzle after the turning of each sheet of music, means carried by the nozzle for adjustably locking the extensible section, and means tensioned on depressing the foot treadle for automatically rotating the shaft to move the same to normal position when the foot treadle has been released.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWARD H. KRAUS. Witnesses:

EDWARD L. SGULLY, HELEN A. HENNESSY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). G. e 

